Builder Costs in Bexley
London | Prices updated for 2026 | All estimates include labour and materials
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Estimated cost in Bexley
£18,200 - £49,400
Single Storey Extension (medium (15-25 sqm))
Typical duration: 6-12 weeks
Builder Prices in Bexley
Single Storey Extension
£18,200 - £49,400Labour
£10,400 - £26,000
Materials
£7,800 - £23,400
Typical duration: 6-12 weeks
Garage Conversion
£8,450 - £19,500Labour
£5,200 - £11,700
Materials
£3,250 - £7,800
Typical duration: 2-4 weeks
Internal Wall Removal
£910 - £2,990Labour
£650 - £1,950
Materials
£260 - £1,040
Typical duration: 1-3 days
Patio Construction
£1,690 - £5,850Labour
£1,040 - £3,250
Materials
£650 - £2,600
Typical duration: 2-5 days
How Bexley Compares
More expensive
Trade prices in Bexley are typically 30% above the national average. This reflects local labour rates and the cost of living in London.
Seasonal Demand for Builder Work
Peak demand is typically in Jul, with the quietest period around Jan. You may find lower prices and better availability during off-peak months.
What Affects the Price
Single Storey Extension
- Extension size (square metres)
- Foundation type required by ground conditions
- Roof design (flat, pitched, or lean-to)
- Level of internal finish and specification
- Planning permission or permitted development status
Garage Conversion
- Garage size and structural condition
- Level of insulation and damp proofing needed
- Whether plumbing or electrics are required
- Quality of internal finish
Internal Wall Removal
- Whether the wall is load-bearing
- Steel beam size and specification
- Services (pipes, wires) running through the wall
- Making good to floor, ceiling, and adjacent walls
Patio Construction
- Patio area (square metres)
- Material choice (concrete slabs, natural stone, porcelain)
- Ground preparation and levelling
- Drainage and edging requirements
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Frequently Asked Questions
How much does a builder cost in Bexley?
Builder prices in Bexley typically range from £910 for internal wall removal to £49,400 for single storey extension. Prices include both labour and materials.
What is the average cost of single storey extension in Bexley?
Single Storey Extension in Bexley costs between £18,200 and £49,400 on average, depending on the scope of work and materials chosen.
When is the cheapest time to hire a builder in Bexley?
Demand for builder work in Bexley is typically lowest in January. Booking during quieter months may mean better availability and competitive pricing.
Are builder prices in Bexley above or below the national average?
Builder prices in Bexley are around 30% above the national average, reflecting higher local labour rates and cost of living.
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